I have an unarmed Barbarian who wants to take Raging Brutality for his next level up. He already has worked his way down the Dragon Style tree and thus adds twice his strength mod to his first attack in a round and a 1.5 to the rest. We are trying to figure out if the multiplier increase Dragon Style would increase the Constitution modifier granted by Raging Brutality.
It seems to make sense that it wouldn't as Raging Brutality sounds like it's just working like the original 2-handing rule, but Dragon Style doesn't increase the entire damage bonus as 2-handing (power attack remains unmultiplied) so Raging Brutality should remain unmultiplied as well.
But I could also totally be missing something...
"If you are using the weapon two-handed, instead add 1-1/2 times your Constitution bonus." Unarmed strikes can't be used two-handed, and therefore that condition can't be fulfilled with unarmed strikes.
As a GM I would probably allow if if the feat was combined with abilities that explicitly use both hands for an unarmed strike (the Hammerblow Style Strike or the Horn of the Criosphinx feat with Monk levels jump to mind), but I don't see Dragon Style qualifying. I think the feat more emulates dragons getting a higher strength multiplier on their bite damage rolls.
That's more or less what I came to the conclusion of but I figured I'd double check. Thanks.